• 제목, 요약, 키워드: G-Rh2

검색결과 390건 처리시간 0.047초

외인성 insulin-like growth factor-I이 육계의 성장에 미치는 영향 (The effects of exogenous insulin-like growth factor-I on broiler chicken growth)

  • 이호일;이문준;이대열;김영안;강창원;전승기
    • 대한수의학회지
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    • v.34 no.3
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    • pp.457-463
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    • 1994
  • Insulin-like growth factor-I(IGF-I) plays an important role in the regulation of mammalian and poultry growth. IGF-I has many actions in different tissues, which include metabolic, mitogenic, and differentiative actions. IGF-I induces insulin-like effects - such as increased cell glucose uptake and glycogen sysnthesis, however several physiological actions of IGF-I may not have been identified yet. In order to investigate the effect on growth in broiler chicken treated with exogenous insulin-like growth factor-I, 30 chickens were injected $50{\mu}g$ reconbinant human IGF- I (rhIGF- I ) per kg body weight as experimental group and 30 ckickens saline subcutanously as control, 3 times according to ages from 2 to 35 days. We established radioimmunoassay method by which we can measure chicken IGF- I (cIGF- I ) as in rhIGF- I assay. The results obtained were as follows; 1) The dilution curve showed in parallelism between rhIGF- I and cIGF- I in the Sep-pak $C_{18}$ cartridge plasma extracts. 2) The body weight of broiler chicken were significantly increased at 31 days($1,176.50{\pm}99.79g$) and 35 days($1,252.84{\pm}125.21g$) of age in treatment groups, compared with control group($1,011.88{\pm}40.22g,\;1,111.32{\pm}153.67g$). The liver and kidney weights on 35 days$(35.24{\pm}5.18g,\;11.05{\pm}1.47g)$ were significantly higher in rhIGF- I treated group than control group($30.95{\pm}4.04g,\;10.01{\pm}1.60g$) 3) The plasma concentration of IGF- l and total protein in rhIGF- I treated group were $58.17{\pm}1.69ng/ml$, $3.75{\pm}0.62g/dl$ respectively compared with control group $45.70{\pm}1.64ng/ml$, $2.32{\pm}0.53g/dl$. The results suggest that exogenous rhIGF- I increased total body weight, liver and kidney weights in broiler chicken, and it may increase IGF- I and total protein concentration in serum.

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귀금속(Au, Rh) 전극계면에서 Langmuir 흡착등온식에 관한 위상이동방법 (The Phase-Shift Method for the Langmuir Adsorption Isotherms at the Noble Metal (Au, Rh) Electrode Interfaces)

  • 천장호;전상규;이재항
    • 전기화학회지
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    • v.6 no.2
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    • pp.119-129
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    • 2003
  • The Langmuir adsorption isotherms of the over-potentially deposited hydrogen (OPD H) fur the cathodic $H_2$ evolution reaction (HER) at the poly-Au and $Rh|0.5M\;H_2SO_4$ aqueous electrolyte interfaces have been studied using cyclic voltammetric and ac impedance techniques. The behavior of the phase shift $(0^{\circ}{\leq}{-\phi}{\leq}90^{\circ})$ for the optimum intermediate frequency corresponds well to that of the fractional surface coverage $(1{\geq}{\theta}{\geq}0)$ at the interfaces. The phase-shift profile $({-\phi}\;vs.\;E)$ for the optimum intermediate frequency, i.e., the phase-shift method, can be used as a new electrochemical method to determine the Langmuir adsorption isotherm $({\theta}\;vs.\;E)$ of the OPD H for the cathodic HER at the interfaces. At the poly-Au|0.5M $H_2SO_4$ aqueous electrolyte interface, the equilibrium constant (K) and the standard free energy $({\Delta}G_{ads})$ of the OPD H are $2.3\times10^{-6}$ and 32.2kJ/mol, respectively. At the poly-Rh|0.5M $H_2SO_4$ aqueous electrolyte interface, K and ${\Delta}G_{ads}$ of the OPD H are $4.1\times10^4\;or\;1.2\times10^{-2}$ and 19.3 or 11.0kJ/mol depending on E, respectively. In contrast to the poly-Au electrode interface, the two different Langmuir adsorption isotherms of the OPD H are observed at the poly-Rh electrode interface. The two different Langmuir adsorption isotherms of the OPD H correspond to the two different adsorption sites of the OPD H on the poly-Rh electrode surface.

Ginsenoside-Rh2 Inhibits Proliferation and Induces Apoptosis of Human Gastric Cancer SGC-7901 Side Population Cells

  • Qian, Jun;Li, Jing;Jia, Jian-Guang;Jin, Xin;Yu, Da-Jun;Guo, Chen-Xu;Xie, Bo;Qian, Li-Yu
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.4
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    • pp.1817-1821
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    • 2016
  • Objectives: To observed the effects of ginsenoside -Rh2 (GS-Rh2) on proliferation and apoptosis of side population (SP) human gastric cancer SGC-7901 cells. Materials and Methods: SGC-7901 SP and Non-SP cells were sorted by flow cytometry and assessed using the cck-8 method. Expression of apoptosis-related proteins Bax and Bcl-2 of SP before and after the intervention was determined by Western-blotting. Results: It was found that the proliferation of SP was significantly faster than that of NSP (P<0.05). In addition, GS-Rh2 inhibited proliferation of gastric cancer SP cells, induced cell cycle arrest and cell apoptosis, and changed the expression of BAX/Bcl-2 proteins in a time-dependent and concentration-dependent manner (P<0.05). Conclusions: With increase of GS-Rh2 dose, GS-Rh2 gradually inhibit the proliferation of SGC-7901 SP cells, which have high proliferation rate, through G1/G0 phase arrest, followed by apoptosis which involves the up-regulation of Bax and the down-regulation of Bcl-2.

초고압 증숙처리가 산삼배양근의 진세노사이드 Rg3와 Rh2의 함량에 미치는 영향 (Effect of High Pressure and Steaming Extraction Processes on Ginsenosides Rg3 and Rh2 Contents of Cultured-Root in Wild Ginseng (Panax ginseng C. A. Meyer))

  • 최운용;이춘근;서용창;송치호;임혜원;이현용
    • 한국약용작물학회지
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    • v.20 no.4
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    • pp.270-276
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    • 2012
  • This study was performed to enhance contents of low molecular weight ginsenoside Rh2 and Rg3 using an ultra high pressure and steaming process in wild cultured-Root in wild ginseng. For selective increase in contents of Rg3 and Rh2 in cultured wild ginseng roots, an ultra high extraction was applied at 500MPa for 20 min which was followed by steaming process at $90^{\circ}C$ for 12 hr. It was revealed that contents of ginsenosides, Rb1, Rb2, Rc and Rd, were decreased with the complex process described above, whereas contents of ginsenoside Rh2 and Rg3 were increased up to 4.918 mg/g and 6.115 mg/g, respectively. In addition, concentration of benzo[${\alpha}$]pyrene in extracts of the cultured wild ginseng roots treated by the complex process was 0.64 ppm but it was 0.78 ppm when it was treated with the steaming process. From the results, it was strongly suggested that low molecular weight ginsenosides, Rh2 and Rg3, are converted from Rb1, Rb2, Rc, and Rd which are easily broken down by an ultra high pressure and steaming process. This results indicate that an ultra high pressure and steaming process can selectively increase in contents of Rg3 and Rh2 in cultured wild ginseng roots and this process might enhance the utilization and values of cultured wild ginseng roots.

HPLC-CAD에 의한 산양삼의 극성 및 비극성 ginsenoside 동시 분석 (Simultaneous Analysis Method for Polar and Non-polar Ginsenosides in Cultivated Wild Ginseng by Reversed-phase HPLC-CAD)

  • 옥선;강재선;김강민
    • 생명과학회지
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    • v.26 no.2
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    • pp.247-252
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    • 2016
  • 산양삼은 식품 또는 약초로써 많이 사용되고 있다. 이번 연구의 목표는 high performance liquid chromatography (HPLC) - charged aerosol detection (CAD)에 의해 산양삼의 추출물에 사포닌들의 분석을 최적화 하는 것이다. CAD는 물리적인 특성은 물론이고 입자크기, 스펙트럼 특성과는 무관하게 비휘발성 물질도 분석할 수 있다. 산양삼 추출물 중 Gensenoside Rb1, Rd, Rg1, Rf, Re 및 Rh1을 분석하였다. HPLC-CAD분석을 위한 사포닌 추출물은 건조 산양삼 10 g에 95% 에탄올 100 ml을 넣어 80℃에서 24시간 동안 추출하여 사포닌을 얻었다. 6개의 주요한 사포닌을 정량화하였을 경우 값은 다음과 같다. 사포닌들의 함량은 Rb1 (5.48±0.12 mg/g), Rd (5.33±0.14 mg/g), Rg1 (12.80±0.05 mg/g), Rf (19.08±0.68 mg/g), Re (19.87± 0.05 mg/g), 및 Rh1 (16.47±0.16 mg/g)로 확인하였다. 대체적으로 산양삼 추출물의 사포닌은 protopanaxatriol (Rg1, Rf, Re, Rh1)의 값이 protopanaxadiol (Rb1, Rd)보다 높게 확인 되었다. 이번 연구에서는 산양삼 사포닌의 분석조건을 HPLC-CAD를 이용하여 최적화하였고 제품화를 위해 약리활성에 관한 연구도 매우 중요할 것이다.

Ru-흑연 전극을 이용한 Rhodamine B의 색 제거 (Decolorization of a Rhodamine B Using Ru-graphite Electrode)

  • 박영식
    • 한국환경과학회지
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    • v.17 no.5
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    • pp.547-553
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    • 2008
  • For the RhB removal from the wastewater, electrochemical method was adapted to this study. Three dimensionally stable anode (Pt, Ir and Ru) and graphite and Ru cathode were used. In order to identify decolorization, the effects of electrode, current density, electrolyte and air flow rate were investigated. The effects of electrode material, current, electrolyte concentration and air flow rate were investigated on the decolorization of RhB. Electro-Fenton's reaction was evaluated by added $Fe^{2+}$ and $H_2O_2$ generated by the graphite cathode. Performance for RhB decolorization of the four electrode systems lay in: Ru-graphite > Ru-Ru > Ir-graphite > Pt-graphite. A complete color removal was obtained for RhB (30 mg/L) at the end of 30 min of electrolysis under optimum operations of 2 g/L NaCl concentration and 2 A current. $Fe^{2+}$ addition increased initial reaction and decreased final RhB concentration. However the effect was not high.

고체 고분자 전해질(SPE)을 이용한 전기분해 공정에서 Rhodamine B 분해 (Degradation of Rhodamine B in Water using Solid Polymer Electrolyte (SPE) in the Electrolysis Process)

  • 박영식
    • 한국환경보건학회지
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    • v.40 no.2
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    • pp.137-146
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    • 2014
  • Objectives: Feasibility of electrochemical oxidation of the aqueous non-biodegradable wastewater such as cationic dye Rhodamine B (RhB) has been investigated in an electrochemical reactor with solid polymer electrolyte (SPE). Methods: Nafion 117 cationic exchange membrane as SPE has been used. Anode/Nafion/cathode sandwiches were constructed by sandwiching Nafion between two dimensionally stable anodes (JP202 electrode). Experiments were conducted to examine the effects of applied current (0.5~2.0 A), supporting electrolyte type (0.2 N NaCl, $Na_2SO_4$, and 1.0 g/L NaCl), initial RhB concentration (2.5~30.0 mg/L) on RhB and COD degradation and $UV_{254}$ absorbance. Results: Experimental results showed that an increase of applied current in electrolysis reaction with solid polymer electrolyte has resulted in the increase of RhB and $UV_{254}$ degradation. Performance for RhB degradation by electrolyte type was best with NaCl 0.2 N followed by SPE, and $Na_2SO_4$. However, the decrease of $UV_{254}$ absorbance of RhB was different from RhB degradation: SPE > NaCl 0.2 N > $Na_2SO_4$. RhB and $UV_{254}$ absorbance decreased linearly with time regardless of the initial concentration. The initial RhB and COD degradation in electrolysis reaction using SPE showed a pseudo-first order kinetics and rate constants were 0.0617 ($R^2=0.9843$) and 0.0216 ($R^2=0.9776$), respectively. Conclusions: Degradation of RhB in the electrochemical reactor with SPE can be achieved applying electrochemical oxidation. Supporting electrolyte has no positive effect on the final $UV_{254}$ absorbance and COD degradation. Mineralization of COD may take a relatively longer time than that of the RhB degradation.

Ginsenoside Rh2 epigenetically regulates cell-mediated immune pathway to inhibit proliferation of MCF-7 breast cancer cells

  • Lee, Hyunkyung;Lee, Seungyeon;Jeong, Dawoon;Kim, Sun Jung
    • Journal of Ginseng Research
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    • v.42 no.4
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    • pp.455-462
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    • 2018
  • Background: Ginsenoside Rh2 has been known to enhance the activity of immune cells, as well as to inhibit the growth of tumor cells. Although the repertoire of genes regulated by Rh2 is well-known in many cancer cells, the epigenetic regulation has yet to be determined, especially for comprehensive approaches to detect methylation changes. Methods: The effect of Rh2 on genome-wide DNA methylation changes in breast cancer cells was examined by treating cultured MCF-7 with Rh2. Pyrosequencing analysis was carried out to measure the methylation level of a global methylation marker, LINE1. Genome-wide methylation analysis was carried out to identify epigenetically regulated genes and to elucidate the most prominent signaling pathway affected by Rh2. Apoptosis and proliferation were monitored to examine the cellular effect of Rh2. Results: LINE1 showed induction of hypomethylation at specific CpGs by 1.6-9.1% (p < 0.05). Genome-wide methylation analysis identified the "cell-mediated immune response"-related pathway as the top network. Cell proliferation of MCF-7 was retarded by Rh2 in a dose-dependent manner. Hypermethylated genes such as CASP1, INSL5, and OR52A1 showed downregulation in the Rh2-treated MCF-7, while hypomethylated genes such as CLINT1, ST3GAL4, and C1orf198 showed upregulation. Notably, a higher survival rate was associated with lower expression of INSL5 and OR52A1 in breast cancer patients, while with higher expression of CLINT1. Conclusion: The results indicate that Rh2 induces epigenetic methylation changes in genes involved in immune response and tumorigenesis, thereby contributing to enhanced immunogenicity and inhibiting the growth of cancer cells.

된장 koji 및 그 혼합에 따른 된장 숙성 과정중의 화학성분 변화 (Chemical composition changes in fermented Doenjang depend on Doenjang koji and its mixture)

  • 주현규;김동현;오균택
    • Applied Biological Chemistry
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    • v.35 no.5
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    • pp.351-360
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    • 1992
  • 개량식과 재래식 된장의 기호와 향기의 단점을 제거하구 장점을 보완 유지하기 위한 기초실험으로서 당화력이 우수한 Aspergillus oryzae koji, Rh. delemar koji 및 재래메주의 배합을 달리하여 된장을 담그고, 된장 koji의 효소활성변화, 된장 숙성과정 중의 화학성분 변화 및 향기성분 분석 그리고 관능검사 등을 실시하여 적정 배합비율과 숙성 정도를 검토하였다. ${\alpha},\;{\beta}-Amylase$ 활성도는 Asp. oryzae koji가 각각 312, $235\;{\mu}g/ml$이고 Rh. delemar koji는 각각 16, 38 mg/ml이었다. 총 질소는 숙성과정 중 처음과 거의 같은 양이 유지되었고, 아미노테 질소함량은 Asp. oryzae+Rh. delemar koji Doenjang(D구), Asp. oryzae koji Doenjang(A구) 그리고 Asp. oryzae koji+Rh. delemar koji Doenjang(C구) 시험구가 숙성 40일에 각각 460, 444, 426gm%로 가장 많았고 Rh. delemar koji의 단용된장은 196mg%로 적었다. 총당은 숙성과정중 모두 점차 감소하였고, 환원당 함량도 숙성 20일까지는 증가하였다가 숙성 30일부터는 감소하였으며, 알콜함량은 Rh. delemar koji 단용된장인 Rh. delemar koji Doenjang(G구) 시험구가 3.42%로 가장 높았다. 유기산 함량은 citrate, malate, lactate, succinate acetate가 검출되었으며, 그중 Rh. delemar koji 단용된장에서 acetic 함량(171.6mg/g)이 가장 높았다. 향기 성분은 8종의 물질이 분리되었으며, 그중 주성분은 tetramethylpyrazine, 4-pyran-4one-3hydroxy-2methyl, 1-octen-3-ol로 전체의 80% 이상을 점유하고 있었다. 숙성 40일된 된장의 맛, 향, 색에 대한 관능검사 성적은 Asp. oryzae+Rh. delemar koji Doenjang(A구)와 Asp. oryzae koji Doenjang(B구) 시험구가 가장 우수하였으며, 그중 Asp. orzae+Rh. delemar koji Doenjang(C구) 시험구가 양호하였다.

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유전자 재조합 인형 과립구 콜로니 자극인자 DA-3030의 일반약리작용 (General Pharmacology of Recombinant Human Granulocyte-colony Stimulating Factor DA-3030 Expressed in E. coli)

  • 배은주;신명수;김순회;강수형;김원배;양중익
    • Biomolecules & Therapeutics
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    • v.2 no.3
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    • pp.281-285
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    • 1994
  • Neutropenia is a major dose-limiting factor in cancer chemotherapy diminishing its usefulness and increase patient's susceptibility to infectious disease. Some recombinant human granulocyte colony stimulating factors(rhG-CSFs) are in use to reduce the risk of this serious side effect. In this study, we examined the pharmacological properties of DA-3030, a rhG-CSF expressed in E. coli. DA-3030 100 and $\mu\textrm{g}$/kg, i. v., had no significant effect on the central nervous, gastrointestinal system in mice and cardiovascular system in rabbits, but it slightly inhibited the spontaneous motility of isolated nonpregnant uterus in rats. It also had no influence on excretion of urinary electrolytes. DA-3030 administered for successive 3 days increased the blood WBC count in zymosan air pouch inflammed rats and in normal rats. These results indicate that DA-3030 has little side effects in animals.

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